Try a "cold restart" , which simply means unplugging the power cord and replugging it after a few seconds have passed. If that does not work, then rerun the CD that you used when you originally installed the printer. Both techniques help to reprogram the printer, to a certain extent.

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This is a paper jam error. Unplug your computer from the AC outlet and from the computer, next place the printer on a table or anywhere that you can get access all panels and the paper tray easily. Remove the paper tray and look for any pieces of paper that may be stuck in the printer. Look also around the back as there is usually a panel that can be removed without any tools.and check there. Also open the printer as if you were going to change the ink and look around there. Make sure you have plenty of lighting or a flashlight as even the tiniest piece of paper can trigger this error message.

I hope this will help you :)
* Green Power light flashes- The printer is receiving a print job, replacing an ink cartridge, charging ink, or cleaning the print head.
* RED paper light is On- If the CD/DVD try guide is open, close the CD/DVD tray guide, load paper, then press the paper button.
Your paper ran out or multiple sheets loaded at the same time . Load paper and press the paper butoon to resume printing.
* RED paper light flashes- Paper is jammed in the printer. Press the paper button to eject the jammed paper. If the light is still flashing , open the cover and remove all paper, including any jammed or torn pieces. Then reload paper and press the paper button to continue printing.
* RED Ink Light Flashes - One or more cartridges are low on ink. Check the message that appears on your screen to determine which cartridge is low, or follow the instructions in " Checking the Ink Supply". Make sure you have a replacement cartridge.
* RED Ink Light is ON- One or more cartridges are out of ink or not installed. If you have just installed a new cartridge, it may be incomaptible with the printer or incorrectly installed. Reinstall it or replace it with the correct cartridge
* RED Ink and RED paper lights flash alternately- The CD/DVD tray guide was left open when you turned on the printer or when printing on paper. Just simply close it/
* Green Power Light is Off; RED paperand RED Ink Lights flashing- Paper may be blocking movement of the print head. Turn off the printer, then open the cover and remove any jammed paper or other foreign objects. Turn the printer back on again. Or it may have an internal error. Turn off the printer, wait a few seconds, then turn it on again.

Hi, Most printers will work
for many years with no problems, but occasionally a piece of paper jams
in the printer. Here is a simple way to fix a paper jam and some tips
on what to do if the problem persists.

Pull the paper out if it is visible. If not, then open the top of the printer so that the jammed piece of paper is visible.

Grasp the paper and pull gently but firmly. If the paper continues to jam in the printer, inspect the rollers to ensure that they are grabbing the paper and pulling it along the paper path properly.

Check the paper path for any obstructions, and clear if found. Also, inspect the other parts that the paper travels through, to ensure that they are not dirty or gummy. If any dirt or other debris is found, clean the parts and try again.

Close the top of the printer.

Place the printer back online. Try the print job again.

Also The flashing error code that indicates a jammed printer is the digital-age equivalent of a flat tire. Sooner or later it happens to everyone, so you'd better know how to get things moving again if you want to finish your print job.

Turn the printer off and on to see if it can automatically clear some or all of the jam. Many printers provide an error-code listing on the front panel display for the area where the jam occurred. If your printer shows an error code, be sure and check the printer manual to see if that identifies the area of the printer where the jam occurred.

Turn off the printer.

Remove any paper trays. Inspect them for wrinkled or damaged paper.

Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.

If necessary, remove the toner or ink cartridge. Place it in a bag or away from light to avoid damaging it.

If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly (see A)
. The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam.

Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.

If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.

Tips & Warnings

Referring to the owner's manual that came with the printer is always a wise precaution before attempting any type of fix to a problem.

All printers will wear out after a certain period of time. If the printer is old or has been used quite heavily, it is possible that a mechanical breakdown has occurred and parts must be replaced before it will work properly and print as it should. Have the printer serviced by an appropriate facility.

If you get toner or ink on your clothing, wipe it off with a dry cloth and then launder the clothing in cold water.

Watch out for loose toner or ink on jammed paper, and do your best to avoid spilling it on yourself or the printer. If a little bit of loose toner or ink gets in the printer, though, it should clear after a few sheets are printed.

The error means you have a paper jam or one of the sensors is incorrectly reading a paper jam. Unplug the unit and check all areas for a jam. Remove the back Jam Clear Cover and check inside there. Remove the Paper Tray and check that area and check if the PE actuator is in place behind the paper tray. Lift the scanner flatbed unit and check inside the print carriage area. Look for scraps of paper at the sides of the platen. These scraps that may be soaked with ink and difficult to see. You may need to move the print head to see both sides.

If the PE actuator is missing, contact Brother for a replacement. Put in the replacement if needed.

Close the scanner unit, replace the clear jam cover (put it on correctly) and replace the paper tray. Plug in and turn on the printer and see if the message clears. If it doesn't clear, access the Ink or Ink Management menu (either directly by a single key or through the menus). Do a test print for Print Quality (Color). If the quality is good, press 1, the up arrow or + key to select Yes. Then press the Stop/Exit button. If the print quality is poor, clean the print head.

If the jam message occurs again, check for more scraps of paper inside the unit as above. Make sure your paper meets the specifications for the printer and isn't getting excessively humid. (Paper will pick up moisture from the atmosphere so keep only the needed amount in open reams or the paper tray.) Fan the paper in the tray and then return it to the paper tray. Make sure the paper is flat in the tray and that the guides are just touching the edge of the paper.

Make sure you put the correct part number ink cartridge in the printer. If so make sure it is installed completely and correctly. If all that is good check for a piece of paper or obstruction in the paper path. try turning the rollers and see if a piece of paper comes out.

An error has occurred in the printer. The number of flashes indicates the type of error, as outlined below. Check the cause and take appropriate action. Two flashes: Out of paper or paper feed errorReload the paper correctly and press the RESUME/CANCEL button. Three flashes: Paper jamIf paper has jammed in the printer, clear the jam, reload the paper in the printer correctly and press the RESUME/CANCEL button.See Paper Jams Four flashes: Ink tank is not installed properlyOpen the Print Head Cover and check whether an ink tank is installed. If an ink tank is installed, push the button of the ink tank, and reinstall the ink tank properly. Five flashes: No Print Head installed, or Print Head failureInstall a Print Head.When the error continues, contact a Canon service representative. Eight flashes: Waste ink absorber almost fullInk used for cleaning is absorbed in a waste ink absorber placed in the printer. Eight flashes indicate that the waste ink absorber is nearly full. Press the RESUME/CANCEL button to cancel the error so that you can continue printing.ImportantIf this error occurs, replacement of the waste ink absorber and maintenance of the printer are required. Canon recommends to contact a Canon service representative as soon as possible. Once the waste ink absorber becomes completely full, it cannot be printed until the Waste ink tank is exchanged.

Nine flashes: A specified period of time has lapsed without receiving a response from a digital camera or digital video camcorder / The digital camera or digital video camcorder connected is not compatible with this printer

The number of orange flashes between green flashes indicates the type of error, as outlined below. Check the cause and take the appropriate action.
Two flashes: Out of paper, paper jam or paper feed error Replace the paper correctly and press the RESUME/CANCEL button. If paper has jammed in the printer, clear the jam and press the RESUME/CANCEL button.
Three flashes: Paper jam If paper has jammed in the printer, clear the jam, replace the paper in the printer correctly and press the RESUME/CANCEL button.
Four flashes: Empty ink tank One of the ink tanks is empty. Replace it.
If all of the above won't help, unplug the printer from the power cable, wait a while, and plug in.
If that didn't fix you, I guess it's time to get in touch with canon, or a repair lab you trust.
Good luck